i used to be a biggie fan but after hearing some tupac songs, men my life's changed. He sure was a great philosopher. pity he went so early. Now i realise that Biggie was more of a commercial rapper. I can say Tha Game reminds me of tupac while 50 is more of a Biggie style rapper. just maybe thats y they didnt get along for long. I feel both late rappers have left their mark on rap as follows:

Tupac- bringing about few poetic rappers who are not so money concious.(unfortunately) e.g Nas, Tha Game, mode9 and new boy Lupe Fiasco
Biggie- bringing about soo many commercial rappers. e.g T.I, Nelly, Busta, Puffy or Diddy watever he calls himself. In this trend its all about the Golds and the Chains, bling bling.

Noticed 50 aint on the list? Well i feel he started as a poetic rapper (get rich, )which was cool but has transformed into a commercial rapper. Is he confused? But we know he has always been an entreprenuer.